Brake-shoe.



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A. T. LOCKARD.

BRAKE sHoE.

APPLICATION FILED SEPT. l0. |915. l

Patented NOV. 2, 1915.

' A TTU/MIE VS earns! ALAN' T. LOCKARB, 0F SFFERN', NEW YORK, SSJIGNGR '.llO AMERCAN BRAKE SHE @t FOUNDRY COMPANY, 0F MHWAH, NEW JERSEY, A CORPORATIUN 0F NEW JERSEY.

BRAKE-SHOE.

specmcation of Letters :raten/c.

Patented Novo 2, dei@ To all whom t may concern:

lBe it known that l, ALAN '.l. LoonARD, a citizen of the United States, and a resident of Sufern, in the county of Rockland and State of New York, have made and 1nventedcertain new and useful Improvements in Brake-Shoes, of which the following is a specification.

This invention relates to brake shoes and reinforcing backs therefor, an object of the invention being to so form the back that, although it is provided with an outwardly looped integral lug, the body of the shoe lying therebeneath will be reinforced and a secure anchorage will be provided therefor.

A further object is to provide a reinforcing back for brake shoes, which may be stamped from sheet metal, and which 1ncludes an outwardly loo ed lintegral lug, the sides of which are rein orced by the provision of end walls, and by brace plates which are carried thereby, the latter extending beneath and being securely anchored to the adjacent portions of the back, so as to hold the lug against opening up and the back against spreading, as well as providing a reinforcement and anchorage for that Vportion of the body which is located directly between the sides of the lug.

@ther objects and advantages will appear as the description proceeds, wherein it is 'to be understood that changes in the precise embodiment of the invention can be made within the scope of what is claimed without departing from the spirit thereof.

rFhe preferred embodiment of my invention is disclosed in the accompanying drawings, wherein Figure 1 is a view in longitudinal vertical section of a brake shoe embodying the characteristic features of my invention. Fig. 2 is a view in section thereof taken on the line 2-2 of Fig. 1. Fig. 3 is a view in plan of the blank from which the back is formed. Fig. 4 is a fragmental view in erspective of the reinforcing back with its integral lug. Fig. 5 is a view partially in side elevation and partially in section of the lug portion of the back, the brace plates of the lug being secured to the back by the use of suitable rivets. Fig. 6 illustrates a somewhat further modification of the back, the brace plates in this instance being secured to the back by spot welding or analogous means. Fig. 7 is a fragmental View partially in side elevation and partially in section ofthe lug portion, of a form of back, wherein the brace plates are located in the general plane of the back.

h. Referring to the sveral views, the blank, illustrated in Fig. 3, is out or stamped from sheet metal and comprises the oblong body 10, through which extendl the elongated openings 11 which, in the completed or nished back, allow the molten metal of the body to flow therein, so as to increase the securement and anchorage thereof. The body 10 is slightly longer than the completed back, so that the central lug forming portion 12 may be outwardly buckled to form a loo ed integral lug. v

he lug forming portion 12 of the blank 1s provided with the confronting U-shaped slits 13, which define tongues 14, the saine being so located that they may be bent inwardly against the top of the lug so as to increase the thickness thereof' and define key receiving openings. Proj ecting` transversely from the lug portions 12 of the blank are the end wall portions 15, which increase in width toward their outer extremities, and carry the brace plate portions 16. The body 10 of the blank 1s provided at points slightly removed from the lug portion 12 with the ,openings 17, and the brace plate portionsl 16 are provided with similar openings 18,

which, after the body of the blank has been v buckled for4 the formation of the lug, and the brace plates have been bent therebeneath, aline with the aforementioned openings and provide for the securement of the brace plate to adjacent portions of theI back. rlhe brace plate portions are also provided with openings 19 to allow the molten metal of the body of the shoe to flow thereabove.

The blank, as thus constituted, is buckled at the lug portion 12 so as to form the integral looped lug 20, the same comprising the top wall 21 and side walls 22. The tongues 14 are turned inward beneath and into contact with the top wall 21 of the lug, and, due to the double thickness of metal thus obtained, renders unnecessary the provision of additional cast metal above the lug, as is usually resorted to in order that the distance from the top of the lug to the key openings will be of the required and bent downward 3 ings 17 and 18 to register and allowing the body metal to iow up therein, so as to permanentlyv tie and lock the two together. The

j brace plates 25 accordingly extend across the lower open portion of the looped lug and serve as a reinforcement and anchorage for that portion of the shoe body which is located directly beneath the lug and between `the sides thereof. Furthermore, these brace plates'hold thelug from opening up and the back yagainst spreading should the body metal of the shoe become broken or fracg tured. The openings 19 within the brace plates allow thebody metal to iow up and around the same for thev secure anchorage and reinforement of this portion of the body, as above outlined. y

The reinforcin back, illustrated in Fig. 5, is similar to t e foregoing with the exceptionthat the brace plates 25 are securely held to the back by means of rivets 27 before the lback is inserted within a mold and the body metal cast thereto. r1 he brace plates may be secured to theback in any desired manner, and a somewhat different form of securement isillustrated in Fig. 6, wherein the brace plates 25 are secured to the adjacent portions of the back by spot welding or analogous means, such changes and variations comin clearly within the scope of my invention.

brace plates- 25' of limited length, and of lsuch size that they extend between the sides 22 of the lugv and in the general plane of e the back 10. -This location of the brace plates allows the body of the shoe to beworn completely away,and provides for the continuous reinforcement of that portion of the body which is located beneath the lug during such wear.

`What I claim is 1. A blank comprising a body with a lug lug end wall portions carried by said body and projecting to oppolsite sides thereof, and brace plates carried by said lug end wall portions.

. plates carried by y n this connection it is also to be understood that the body` 26 of theshoe may 2.' A blank of the class described comprising a body with a lug forming portion, said body provided with openings therein spaced a. slight distance from said lug forming portion, lug end wall portions rejecting to opposite sides of and carried by said body, b race plates carried by said end wall portions and provided with openings therein ladpted to register with the openings in said 3. A blank 0f the class described comprising an oblong body relatively longer than the finished back and provided with a centrally disposed 4lug forming portion, said lug forming portion provided with. confrontin U-shaped slits.

4. A lank of the class described comprising a body with a lug forming portion, outwardly widening lug end wall portions projecting to opposite sides of said body, and brace plates carried by said end wall portions, said lug portions provided with confronting U-shaped slits.

5. A blank of the class described comprising'anbblong body, lug end Wall portions projecting to opposite sides thereof, brace plates carried by said end wall portions, said body. and said brace plates provided with openings adapted to aline after the bending of said blan said lug portion provided with symmetrically arranged U-shaped confronting slits.

6. A brake shoe back with a looped lug,

end walls carried by said lug and brace said end walls and projecting beneath the open portion of said lug.

A reinforcing back for brake" shoes formed with a looped lug, end walls'carried by and projecting downwardly from the open -of said lug and brace plates carried by said end walls, and projecting beneath the open extremity of said lug.

8. A back for brake shoes comprising a body formed with a looped lug, downwardly widening end walls carried by said lug and brace plates carried by said end walls, and projecting across the open portion 4of said 9. A brake shoe back formed with a 'looped lug, downwardly widening end walls open portion of said lug, and a brake shoe body cast to said back with the metal thereof extending above and anchored to the said brace plates.

11. A brake shoe back with a looped lug,

end walls carried by said lug and brace plates carried by said end walls and prointatta jecting beneath and across the open extremity of said lug and anchored to said back. Lv

12. A brake shoe comprising a reinforcing back with a looped lug, end Walls carried by said lug, brace plates carried by said end walls and projecting across the open extremity of said lug, and a brake shoe body cast to said back, reinforced by said brace plates and anchoring and tying the same to said reinforcing back.

13. A brake shoe back formed with a looped lug, the sides of said lug provided with U-sha ed slits therein, defining tongues with the ree extremities thereof remote 15 from the top of said lug, said tongues being bent inward and into contact with the lower surface of the top of said lug.

Signed at Chicago in the-county of Cook and State of lllinois this 31day of August 2o A. D. 1915.

C., E. VREELAND, H. E. WHITNEY. 

